/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package co.elastic.apm.agent.servlet;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;

import javax.annotation.Nullable;

public final class JavaxUtil {

    private JavaxUtil() {}

    @Nullable
    public static Object[] getInfoFromServletContext(@Nullable ServletConfig servletConfig) {
        if (servletConfig != null) {
            ServletContext servletContext = servletConfig.getServletContext();
            if (null != servletContext) {
                return new Object[]{servletContext.getMajorVersion(), servletContext.getMinorVersion(), servletContext.getServerInfo()};
            }
        }
        return null;
    }
}
